Which data design Each situation described in Exercises 211

Which data design? Each situation described in Exercises 21.1 to 21.4 requires inference about a mean or means. Identify each as involving (1) a single sample, (2) matched pairs, or (3) two independent samples. The procedures of Chapter 20 apply to designs (1) and (2). We are about to learn procedures for design (3). 21.1 How Sweet It Is. Choose 10 agricultural plots of land located in different regions of the state. Plant half of each plot with one variety of sweet corn and the other with a different variety. Compare the sugar contents of both variety ties of corn.

Solution

In this question the random sample is sugar contents of both varieties of corn. Sugar content of both varieties of corn is independent of each other. Hence this is a case of two independent samples.